import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.io.PrintWriter;

public class Main {
    public static void main(String[] args) throws FileNotFoundException {
        new PrintWriter("").println();
        new PrintStream("").println();
        new PrintWriter("").write('a');
        new PrintStream("").write('b');
        System.setOut(new PrintStream(""));
    }
}